dubbo.apache.org/dubbo-go/v3@v3.1.1/common/extension/graceful_shutdown.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  package extension
    19  
    20  import (
    21  	"container/list"
    22  )
    23  
    24  var customShutdownCallbacks = list.New()
    25  
    26  /**
    27   * AddCustomShutdownCallback
    28   * you should not make any assumption about the order.
    29   * For example, if you have more than one callbacks, and you wish the order is:
    30   * callback1()
    31   * callback2()
    32   * ...
    33   * callbackN()
    34   * Then you should put then together:
    35   * func callback() {
    36   *     callback1()
    37   *     callback2()
    38   *     ...
    39   *     callbackN()
    40   * }
    41   * I think the order of custom callbacks should be decided by the users.
    42   * Even though I can design a mechanism to support the ordered custom callbacks,
    43   * the benefit of that mechanism is low.
    44   * And it may introduce much complication for another users.
    45   */
    46  func AddCustomShutdownCallback(callback func()) {
    47  	customShutdownCallbacks.PushBack(callback)
    48  }
    49  
    50  // GetAllCustomShutdownCallbacks gets all custom shutdown callbacks
    51  func GetAllCustomShutdownCallbacks() *list.List {
    52  	return customShutdownCallbacks
    53  }